Piezo Fans
PiezoFans, LLC brings the latest piezoelectric technology to cooling applications.
The need for piezo fans has become increasingly important as a major alternative cooling solution due to the ever-shrinking size of our electronics, and the small heat sinks allowable by the design not being able to meet the cooling requirements. Rotary fans are also too large for many applications and they require more power than can be provided. Also, the increasingly stringent acoustic emission and electromagnetic compatibility (EMC) standards, are also driving this new piezo fan technology.
Piezo Technologies' leading-edge, proprietary piezoceramics make this new piezo fan technology possible. These new ceramics provide higher performance in deflection for a given size and power requirement than any other piezoceramic available.
Piezo fans can be used in a wide variety of electronics applications. We can custom design and manufacture a solution to meet your exact needs. Piezo fans can be sized according to the specific application and desired cooling needs. Piezo fan arrays can also be used to increase effectiveness. Just a few examples of where piezo fans can be used include:
- Computers
- PDAs
- Mobile phones
- Portable electronics
- Video games
- Wireless devices
...and much more.
Piezo fans are the most advanced cooling systems available for small electronics, offering:
- Low power requirements
- No bearings or wearing parts
- Scale versatility
- Light weight
- High structural durability
- Quiet / noiseless
- Solid state devices
- Produces negligible heat
- Operates at varying temperatures
- Won't affect magnetic fields
- Won't interfere with electromagnetic transmission
- Can be produced in high volume at a low per unit cost
- Can be optimized for various voltages, temperatures, size, applications, etc.
...and much more.
Piezo fans work on a simple principle. The piezo fan has a flexible blade, typically made of mylar, that is set into motion by a piezoceramic bending element. This bending element functions due to an ultra low power oscillating current of electricity. The electric field causes the piezoceramic to elongate, which bends the blade back and forth. The rapid flapping action produced is much like that of a humming bird’s wing, and creates an enormous amount of cooling capacity.
A more technical description would be that alternating currents cause piezoelectric ceramics to bend a blade element. High-amplitude resonant vibration of the blade creates a channeled air flow that is used for ultra-efficient cooling. The length and thickness ratios of the piezoceramics and the blades used play an important role in the cooling effectiveness, and these are considered for each piezo fan system design.
Top of Page